stimulants and other biological products. Don’t overlook sprayer calibration to ensure that correct rates of ... with calibration is to determine the actual rate of application in gallons per acre, then to make ... adjustments if the difference between the actual rate and the intended rate is greater or less than 5% of the ...

products can work well in spring. Herbicide effectiveness ratings for poison hemlock can be found in Table ... 21 of the current Weed Control Guide for Ohio, Indiana, and Illinois. Herbicides rated 8 or 9 on ...